Yarn cleaner



May 22, 1923.

H. E. VAN NESS YARN CLEANER ATToRmaY;l

2 Sheets-Sheet l May 22, 1923, v 1,456.262

l H. VAN NESS l YARN CLEANER l Filed -June 8, 1922 2 Sheets-Sheet 2 l fgy@ 79 j J" -JJI27 E@ 190; 5 4/ E6 Patented May 22, 1923.

HENRY E. VAN NESS, F ELMIRA, NEW YORK,

YARN CLEANER.

Application led June 8,

T o all 'whomz't may concern l Be itknownthat l. llizxnv li. VAN Nass, acitizen of the lnited States. residing at Elmira, in the county of(`hemung and State of New York, have invented certain new and usefulImprovements i'i Yarn Cleaners, fully'descrihed and represented in thefollowing specification and the accompanying drawings,.forming a part ofthe same. v

This invention relates to yarn cleaners for eliminating from yarnimpurities such as parts of seeds, parts of stems. slubs, specks,grains. of sand, and other particles before the yarn is made intoclot-h, and thus improving the quality of thek cloth made from the yarnand' avoiding thc necessity Jor excessive bleaching of the cloth.

Any object of the invention is to provide a device adapted thoroughly toclean a traveling yarn without retarding the travel of the yarn, so thatdanger of breaking of the yarn in the cleaner is eliminated.

A further object of the invention 1s to provide a yarn cleaner adaptedto discharge the particles removed from the yarn, wit out the use of anymechanically-driven parts.,

Other objects and advantages of the invention are hereinafter pointedout in connection with a detailed description of a specific embodimentof the invention.

A yarn cleaner embodying the invention and adapted to accomplish theobjects above outlined may include a frame provided with a plurality ofresiliently supported elements which are set into vibrationy by thetravel of the yarn, and which, when vlbrating, serve to detach particlesfrom the traveling yarn, and to direct the detached particles away fromthe line of the travel of the yarn and out of the cleaner.v Thevibratory elements may be of two forms, one form being adaptcdprincipally to loosen and detach particles from the yarn and the otherform being adapted both to detach particles from the yarn and to directdetached particles away from the line of travel of the yarn and out ofthe cleaner. The vibrator-y elements are most desirably arranged so thatthey all operate upon a yarn traveling in a straight line:and the framemay be provided with a cover which insures bringing the yarn intooperative relation with all'. the felements when the cleaner isthreaded.

In order that the invention lmay clearly 1922. serial No. 566,722.

be understood, I will describe in detail a yarn cleaner embodying theinvention which is illustrated in the accompanying drawings, in which :el

["ig. 1 is a top view of the cleaner with the cover removed;

Fig. 2 is a sidev view sectioned on ,the line 2-2 of Fig'.y l; Y

Fig. 3 is an end elevation sectioned on the line 3-3 of Fig. 1;

lFig; Lis a fragmentary plan view on a still larger scale, omitting thecover, and showing the operativey .portions of some of the vibratoryelements;

Fig. 5 is an enlarged fragmentary vertical section on the line 5 5 ofFig. 3 showing the mannerin which the .vibratory elements are mounted inthe frame;

Fig. 6 is an enlarged perspective view of one of the vibratory cleaningand deflecting elements;

Fig. T is an enlarged perspectivel view ot' one of the vibratorycleaning elements;

Fig. 8 is a fragmentary perspective view of one of the vibratorycleaning elements looking toward the cleaning edge, on a still largerscale; and

Fig. 9 is a fragmentary back view of a pair ot' cleaning and dcflectingblades of modified construction.

The cleaner shown in the drawings is adapted to operate upon a travelingyarn which is being drawn from a bobbin or other supply into a windingor spooling or other machine. The cleaner may conveniently be secured toa portion of the frame of any .such machine. andv for this purpose theremay be secured to the frame 10 of the cleaner a. stud [11 containing ahole and provided with a set screw 12. It will be understood, however,that the cleaner may be mounted in any desired manner and will operateupon any traveling yarn regardless of the nature ot' vthe machine intowhich the yarn` is being drawn.

T he trame 10 of the cleaner may be rectangular and' the ends 13 and letof the frame may conveniently be made integra-l with one side 15 of theframe. For a reason hereinafter explained. it is desirable to form theother side 16 of the frame of a separate piece of metal and t'o attachit to the ends 13, 14 in such manner that the distance between it andthe side 15 of the frame may be varied. In the form shown, the side 16has a dovetail connection with the ends 13, 14 and is on a larger scale,

secured thereto by means of screws 17 which have a threaded connectionwith the ends of the frame and pass through transverse slots 18 in theside 16, so that by loosening the screws the side 16 may be movedslightly toward or away from .the side 15 of the frame.

The ends 13 and 14 of the frame 10 are provided at their middles withrecesses 20, 21 which permit a yarn A to be drawn longitudinally acrossthe middle of the frame some distance below the upper edge of the frame.y

To the end 13 of the frame, which I term the front end because it is theend from which the traveling yarn enters the cleaner, is attached atension device 19 which retains the yarn under tension as it is drawnacross the frame of the cleaner. The tension deviceillustrated/comprises a plate 19u which is secured to the end 13 of thecleaner and which has at its outer or front end an entrance recess 19".The portions of the plate 19a at each side of the recess 19J may beturned up to form ears 19. The recess 19h is in line with the recesses20. 21 in the ends 13, 14 of the frame. On the plate 19 at one side ofthe Acenter line of the recesses is mounted a vertical stud 19(l havinga cylindrical shank and a non-circular head 1 9e On the plate 19n andabout the shank 1s seated an upper rotary 'tension member 19r which hasa disc-shapedl bottom 19g and a wide flaring flange l19h extendingoutwardly and upwardly from the periphery of the bottom. The flange 19hextends above the top of the end 13 of the frame 19 and over the innerend of the entrance. recess 19". One or more weight discs 19 havingnonci'rcular holes fittin over the head of the stud may be seate on thebottom 19 of the rotary tension member 19'.

As the tension device illustrated forms a part of the subject matter ofmv copending.

application, filed July 20, 1922, Serial No. 576,249, which is acontinuation in part of the present application. the tension device isnot claimed in the present application.

Beyond the rear end 14 of the frame 10, and mounted either upon the rearend or upon a portion of the machine to which the frame is secured` is ayarn guide 19 located below the bottom of the recess 21. The yarn whichis drawnacross the frame is passed under the guide 191 before it is ledinto the winding or other machine Which causes its travel.

At the top of each of the sides 15 and 16` of the frame are longrecesses 23, 22 which provide space for the mountings of the vibratoryelements which are hereinafter described.

The top of the frame 10 `is closed by a cover consisting of two pieces26, 27 whose inner edges are spaced to provide a slot 28 adapted topermit the yarn to be drawn into the position indicated by dotted linesin Figs. 1 and 2. The 'cover pieces 26 and 2T are secured to the frameby means of screws 25 entering holes 31 in the ends of the frame andprojections 29, 30 on the sides 15, 16 of the frame between the recesses23 and the recesses 22.

A skirt 32 extends downwardly from the frame to confine the particlesand any matter removed from the yarn by the cleaner. The skirt 32 mayconveniently be formed of a single piece of metal and secured tothe ends13, 14 and the side 15 of the frame by screws 33. The skirt 32 is notattached to the side 16 of the frame, and the skirt is of suflicientwidth to allow for the adjustment ofthe side 16 which is provided by theslots 18.

Mounted on the sides 15, 16 of the frame and extending inwardlytherefrom are vibratory elements which serve to clean the yarn and todirect the matter removed from the yarn out of the cleaner. Two types ofvibratory elements are shown in the drawings. The elements 50, 50 of thefirst type serve to loosen particles projecting from the varn and todetach some of the particles from the yarn. As their principal functionis to clean, these elements are hereinafter termed cleaning elements.The elements 70, 70 of the second type serve both to detach particlesfrom the yarn and to defleet the detached particles away from the lineof travel of the yarn and out of the cleaner. Because of the twofunctions which they perform. these lelements are hereinafter termedcleaning and deflectiug elements. Two pairs of vibratory cleaningelements 50, 50 are shown in the-drawings, and these elements arelocated near the front end' of the frame. Each cleaning element mayconveniently be formed from a single piece of sheet metal as shown. Thethickness of the sheet metal is somewhat exaggerated in the drawings forthe sake of clearness.

Each vibratory cleaning element 50 comprises a cleaning blade and aresilient support 52. The outer end portion 54 of the support 52 is setin a transverse slot 51 extending downwardly from the bottom of one ofthe recesses 23 in the side 15 of the frame. The support 52 extendsinwardly vfrom the side 15 of the frame and is inclined toward the backend 14 of the frame. The blade 53 extends inwardly from the inner end ofthe support 52 and is inclined toward the front end 13 of the frame. Theinclinations of the support 52 and the blade 53 are such that the innerend of the blade 53 is substantially in line with the outer Vend portion54 of the support 52.

The outer end portion 54 of the support 52 is held in its slot 51 bymeans of a washer 55 which is forced down by a screw 56 (see portion 58of the end above the notch 57l is also made parallel to the sides of theframe and is rounded off at its upper cor.

ner 59. In the form illustrated the lower portion 60 of the end belowthe notch 57 is also made parallel to the sides of the frame. Thesurface of the notch 57 and the front surface 61v of the blade 53intersect in an acute edge 62, which I term the cleanin edve n hecleaning elements 50 which are mounted on the side 16 of the frame "aresimilar in formto the cleaning elements 50, and in the drawings theparts' of the elements 50 aredesignated by the same numerals as thecorresponding parts of the elements 50, a prime being added to eachnumeral.

The cleaning elements 50, 50 are arranged in the frame in staggeredrelation as illustrated. The inner ends of the ele ments 50 lie in acommon vertical plane and the notches 57 are aligned. The inner ends ofthe elements 50 vlie in a common,ivertical plane and the notches 57 arealigned. The lower corners of both sets of notches are substantially ona level with the bottoms of theI recesses 20, 21 in the ends 13, 14 offrame 10. When the cleaner isadjusted for cleaning yarns of diameterssubstantially equal to that of the notches 57, 57 the distance betweenthe sides 15 and 16 of the frame 10 is'adjusted so that the planes inwhich the inner ends of the cleaning elements 50 and 50 lie arecoincident and the centers of the notches 57, 57 lie onastraight line,which is the line of travel of the yarn A through the cleaner.

The notches 57 and the cleaning edges 62 of the elements 50 surroundone-half` of the circumference of the yarn A, while notches 57 and thecleaning edges 62' of `the elements 50 surround the other half of thecircumference of the yarn.` Each cleaning element is free to vibratethrough the bending of its resilient portion 52. When the elements arein vibration, the center point of the cleaning edge ofeachelement movesin a plane including the line of travel of the varn and in a curvetangential to the yarn. Consequently', the movement of each cleaningedge is substantially longitudinal of the yarn, having a relativelylarge component longitudinal of the yarn and a relatively smallcomponent away from the line of travel of the yarn.

The vibratory cleaning and deflecting elements 70, are located in theportion of the frame to the rear of the cleaning elements 50, 50 exceptthat one pair of the cleaning and deflecting elements is located betweenthe two pairs of cleaning elements. Each cleanin and deflecting elementmay conveniently e formed from a single piece of sheet metal as shown.The thickness of the sheet material is somewhat exaggerated in thedrawings for the sake of clearness.

`Each cleanin comprises a bla e 73 anda resilient support 72. The outerend portion 74 of the reand deflecting element 70 silient support `72 isset in a transverse slot 7l in the side 15 in the-samemanner that thesupports of the cleaning elements 50 are set in the slots 51. Theresilient support 72 extends straight inward fr'om the side 15 of theframe, while the blade 73 extends 4/transversely to the line of travelof the yarn andi is inclined rearwardly from t /at an angle of about 35.The b ade has a straight inner edge 75, which isperpendicular to theresilient support 72, and is'inclined to the line of travel of the'yyarnby reason of the inclination of the blade. The outer end portion 74 ofthe support 72 which is seated 1n the slot 71 is offset downward fromt-he remainder of the support so that the top of *the blade 73 is somedistance above the bottom of the recesses 20, 21, and

lies close to the 'lower surface of the cover piece 26. A slightclearance is allowed, however, to leave the element free to vibrate.l Tofacilitate threading, the upper corner of the inner edge 75 of the blade73 is rounded oi at 79.

The cleaning and dellecting elements 70 are similar to the elements 70,except that each of them has at its inner edge 75', some distance belowthe up er end of this edge, a semi-elliptical note extending parallel tothe sides of the frame. The cleaning and deflecting elements 70, 70 arearranged in the frame in pairs, each of the elements 70 being directly oposite one of the elements 70. The inner e ges 75 of the elements 70 liein a common vertical plane positioned slightly to one side of thecenterline of the frame. The inner edges 75 of the elements 70 lie in acommon' ververticalv tical plane substantially at the center of theframe, and the notches 80 in these edges are aligned with each' otherand with the notches 57 ofthe elements When the cleaner is adjusted forcleaning yarns of d1- ameters substantially equal to that of the notches80, the distance between the sides 15 and 16 of the frame 10 is adjustedso that the planes in which the inner edges 75, 75 of the cleaningelements 70. 70 lie are separated by a distance equal to half thediameter of the yarn. Consequently. the notches 80 of the blades 73surround onehalf the circumference of the yarn A, while from the side 16of the frame.

support just inside the side of the frame..

This is because the greatest bending strain occurs at this point andalso because the outer end portions 74, 74' of the supports arepreferably made a little narrower than the remainder of the supports. asseen in Figs. 3 and 6. Consequently, when the inner edge of one of theblades 71, 73 is struck by a particle projecting from the yarn, theblade turns outwardly substantially about a Vertical axis lying at theinner end of the slot 71 in which its support 72 is mounted. In suchturning the upper end of the edge 75 or 75' of the blade moves in acurve tangential to the center line of the frame, while the portionL ofthe inner edge adjacent to the yarn moves substantially lin a curvetangential to the yarn. Since, however, each of the blades 7 3. 7 3 isinclined to the vertical axis about which it turns, the lower end of itsinner edge 75 or 7 5 .moves outwardly to a greater extent than the upperportion of its inner edge.

As a result, when one or both of the re sil-ient supports 72, 72' of apair of elements 7 0, 70 are bent rearwardly, the inner edges 75, 75 ofthe blades 73, 73', instead i of lying parallel to each other as intheir normal position, diverge from each other toward their lower ends.

A plurality of pins 90 extend inwardly The upper surfaces of these pinslie in a horizontal plane tangential to the notches 57, 57 and thenotches S0 at their lower corners, so that the pins aid` in placing theyarn in operative relation to the notches when the`cleaner is threadedand serve to prevent the yarn from dropping below the notches in casethe yarn is slackened.

The use of the cleaner is as follows The cleaner is first adjusted inaccordance with the diameter of the yarn in connection with which itisto be used. The adjustment is effected by loosening the screws 17 andmoving the side 16 of the frame slightly inwardly or outwardly. It

the diameter of the yarn is substantially equal to that of the notches57, 57 and 80, the side 16 is positioned as shown in the drawing so asto bring the centers of the notches 57 on a line with the centers of thenotches 57 and to make the distance between the inner edges 75' of theelements 70' and the inner edges 75 of the elements 70 equal to one-halfthe diameter of the yarn. Owing to the compressibility of th'e yarn,yarns wh'ose diameters vary somewhat from that of the notches 57. 57 and80 may be successfully cleaned with the device adjusted as illustrated,1f, however, the diameter of the yarn is materially different from thatof the notches. the cleaner should be adjusted so that the notches 57,57' surround the yarn as closely as possible, while at the same time thedistance `from the middle of each notch 8() to the edge7 5 opposite ismade substantially e ual to the diameter of the yarn. This is (one bymoving the side 16 of the frame slightly inwardly if a smaller yarn isto be cleaned, or sllghtl outwardly if a larger yarn is to be cleane Thecleaner and its tension device are threaded by drawing the yarn into theentrance recess 19b across the top of the rotary tension member 19f intothe slot 28 between the cover pieces 26 and 27 and the recess 21 in theend 14. The yarn is then passed under the guide 19 and drawn forward bya winding or other machine not shown in the drawings. As soon as thepull is applied to the yarn by the winding machine, the arn slips overthe edge of the flange 19h o the rotary tension by thisV flange, entersbetween the bottom 19g of the tension member and the plate 19, and dropsinto the recess 20 in the end member 13. As the yarn is drawn down it isguided to the center of the frame by the rounded corners 79, 79' of theelements 70, and the rounded corners 59,' 59' of the elements 50, 50'.The yarn is drawn forward while it is drawn downward and the forwardmovement of the yarn pulls each of the vibratory elements backwards,permitting the yarn to be drawn between their inner edges and into thenotches 57, 57 and 80. @The pins 90 prevent it from being drawn belowthe notches. The yarn then extends through the cleaner in a straightline and is'drawn forward by a winding or other machine not yshown inthe drawings.

In the operation of the cleaner. the vibratory "elements, including boththe cleaning elements 50. 50 and the cleaning and dellecting elements70, 70', are set into vibration by the impingement against their edgesof particles projecting from the yarn. As the cleaning elementsl 50, 50vibrate, the cleaning edges 62, 62" of these elements strike particlesprojecting from the yarn and loosen or detach the particles by abrushing, scraping and hooking action. As the cleaning and dellectingelements 70. 70 vibrate, the edges of the notches 80 of the elements70', and, to a less extent, the parts of the inner edges of the elements7() which are adjacent to the yarn, strike particles projecting from theyarn and detach them from the yarn by a brushing and scraping action. Asthe yarn is drawn through the cleaner under tension, it ro tates to acertain extent while passing member 19' and then, guided' incassa,

through the cleaner, and as a result of this rotation all partsvoi itscircumference are brought into contact with one or another of thenotches 80 so that the yarn is cleaned throughout its circumference.

The particles which have been detached from the yarn by one of thecleaning elements 50 or one o f the cleanin and deflecting elements 70,and the shre of liber adhering to the detached particles, tend to beIt'le distance from the openin between/thetwo blades, are immediatelyirected downwardly away from the line of travel of the yarn. If, on theother hand, a detached particle happens to strike one of the blades nearthe opening between the blades, the shreds of fiber adhering to thisparticle are frequently drawn through the opening between the blades bythe air current. The opening between the blades is, however, so narrowthat the particle itself is not drawn into this open'- ing, t remainsincontact with the front surfaces yof the blades and travels down alothe front surfaces as' the blades vibrate itidrops with its'fdhering berfrom the lower ends of the blades. The downward travel of the particlesand fibre is facilitated by the fact that the inner edges of the bladesdiverge from each other when the blades are turned outwardly. As aresult, all the particles removed from the yarn, and all fibrous matteradhering to them, are directed downwardly within the skirt 32, and maybe collected in any desired manner ator below the bottom of the skirt.

While I wish it clearly understood that my invention is by no meanslimited to the particular form and arrangement of parts which I havedescribed, I will nevertheless point out a number of special advantageswhich are obtained through the use of certain features of the embodimentof ythe invention which has been illustrated; Y The arrangement of thecleaning elements and cleaning and dellecting elements illustrated, inwhich a few pairs of cleaning elements are placed so-as to operate upo'nthe yarn as it enters the cleaner, and a plurality of pairs of cleaningand deilccting blades are positioned to operate upon the yarn after thecleaning elements, provides for the loosening by the cleaning elementsof particles which may be firmly embedded in the yarn,

before these particles are brought into conto. it, therefore, travelsalon tact with the cleaning and detlecting elements. The arrangement hasbeen found to effect a thorough cleaning of many different kinds of yarnand constitutes a part of `my invention. It will be understood, however,

that the arrangement may be modified, if desired, in accordance with thecharacter of the yarn to be cleaned and the character of the dirt whichit contains. Thus if theyarn contains many specks firmly embedded therein, it may be desirable to use more cleaning elements than are shown inthe drawings. On

the other hand, it has been found that some y,

yarns may be satisfactorily cleaned by the cleaning and dellectingelements alone, without the use of the cleaning elements.

The notches in the cleaning and deflecti-ng blade 7 3 possess twoadvantages. In the first place they partially surround the yarn like thenotches 57 and 57 of the cleaning Ablades 53, so that, when the blades 73 are in vibration, they have a cleaning action quite Asimilar to thatof the blades 53, 53. In the second place, the notches 80 make itpossible to. ace the inner edges of each pair of blades 3, `73 closetogether without inching the yarn. The close'spacing of the ladesprevents detached particles from being drawn throu hbetween the bladesunder the influence of t e air currentI upon fibrous matter adhering tothe particles. It is not essential, however, that only one blade of eachY lpair be, notched. "',Thus, each deecting blade of each pair may benotched as illustrated in Fig. '9, where the deilecting blade 7 3contains a notch 80, while the-opposite deliecting blade '7 3" containsa similar notch 80". In this case the combined depth of the two notches80i and`80" is less than the diameter of the yarn, so that when the twonotches contact with the yarn the inner edges 7 5*", 75a of the bladesare spaced apart. Conseguently, where, in the claims which follow, 1e

' erence is made to one of the blades hav-v ing a notch in its inner edthis should be understood not to imply t at the4 ed of Athe other blademust necessarily be straight;

If only one blade of each pair is notched, it is not essential that allthe notched blades be placed at one side of the yarn, although thisarrangement has the advantage of facilitating the threading of thecleaner. It is desirable, however, that the notch or notches in theinner edges of each pair of blades be 'so formedthat they surround artion of the circumference of the yarn w en the inner edges'of theblades are spacedapart from each other. The s ace allowed between theinner edges of the lades in their` normal position is most desirablymade lesa than the diameter of the arn, as shown; but, on the otherhand, the blades should not be placed so closely that the fibrous matterdetached .with the particles is caught or gripped between them.

The fact that the yarn is drawn across the edges of the cleaning anddeflecting blades '73, 73 some distance below the upper edges of theblades tends to prevent fibrous matter removed from the yarn with theparticles from catching on the tops of the blades. The positioning ofthe upper edges of the lblades close to the bottom surface of the coverpieces tends further to prevent the collection of fibrous matter onthese upper edges.

Many of the features of the yarn cleaner described in this applicationare described and claimed in my copending application led March 29,1922, Serial No. 547,596, and are in consequence not claimed in thisapplication.

What is claimed is: ,p

1. A yarn cleaner for removing particles from a traveling yarn,comprising an open trame having aligned recesses in its ends to permitthe passage of the yarn longitudinally across the frame, a cover on saidframe, and transverse deiiecting blades yieldably mounted on said framehaving their inner edges adjacent to the yarn and their upper edgesspaced upwardly from the yarn and close to the lower surface of saidcover.

2. In a yarn cleaner for removing particles froma traveling yarn, a pairof trans-k verse blades located on opposite sides of the yarn and havinginner edges spaced by a distance less than the diameter of the yarn, oneof said blades having in its inner edge a notch partially surroundingthe yarn.

3. In a yarn cleaner for removing particles from a traveling yarn, apair of blades transverse to the line of travel of the yarn and inclinedthereto, located on opposite sides of the yarn and having inner edgesspaced by a distance less than the diameter ot the yarn, one of saidblades having in its inner edge anelliptically curved notch partiallyencircling the yarn.

4. In a yarn cleaner for removing particles from a traveling yarn, thecombination of means' for detaching particles from the yarn, and a pairof transverse detlecting blades located on opposite sides of the yarnbehind said detaching means and having inner edges spaced by a distanceless than the diameter of the yarn, one of the blades having in itsinner edge a notch partially surrounding the yarn.

5. In a yarn cleaner for removing particles from a traveling yarn, apair of transverse blades located on opposite sides of the yarn andhaving inner edges spaced by a distance less thanth'e diameter of theyarn, one of said blades having in its inner edge a notch partiallysurrounding the yarn, and yieldable supports for said blades permittingthem to vibrate freely in directions a proximately longitudinal of theyarn.

6. In a yyarn cleaner for removing particles from a traveling yarn, apair of blades transverse to the` line of travel of the yarn andinclined thereto, located on opposite sides oi' the yarn and havinginner edges spaced by a distance less than the diameter or' the yarn,one of said blades having in its inner edge a notch partiallysurroundingthe yarn, and yieldable supports for said blades permittingthem to vibrate freely in directions approximately longitudinal of theyarn.. i

T. In a yarn cleaner for removing particles from a traveling yarn7 apair ot blades transverse to the line of travel of the yarn and inclinedthereto, located on opposite sides or' the yarn and having inner edgesspaced by a distance less than the the diameter of the yarn, one of saidblades having in its inner edge a notch partially surroundin the yarn,and yieldable supports for said bglades permitting a vibratory movementof their inner edges having a component longitudinal of the yarn and acomponent transverse to the line of travel of the yarn.

8. In a yarn cleaner for removing partiy cles from a traveling yarn, aplurality of pairs of blades transverse to the line of travel of theyarn and inclined thereto, each pair 'havinginner edges spaced by adistance approXimately equal to half the diameter of the yarn and onlyone blade of each pair having in its .inner edge a notch surroundin halfthe circumference of the yarn, and yie dable supports for said bladespermitting free vibration thereof.

9. In a yarn cleaner for removing particles from a traveling yarn, aplurality of transverse blades located at one side of the yarn andhavingstraight inner edges adjacent to the yarn, a plurality of blades at, theopposite side of the yarn, located, one -directly pposite each of saidrst-mentioned blades, and having in their inner edges aligned notchspartially surrounding the yarn.A

10. In a cleaner for removing particles from a traveling yarn, acleaning and delecting blade transverse to the line of travel of theyarn and inclined thereto, having an inner edge inclined tothe line oftravel of the yarn and containin rounding the yarn, and a resilientsupport' for said blade permitting a vibration of said a notch partlysurblade in which said notch moves approximately longitudinally of theyarn. 11. In a yarn cleaner for removing particles from a travelin yarn,a pair of transverse blades locate on opposite sides of the yarn andhaving inner edges s aced by a distance less than the diameter o theyarn, one of said blades having in its inner edge a. notch partiallysurrounding the yarn, and @supports for said blades permitting them toturn outward from each other in a direction so inclined tothe bladesthat the lower ends of their inner edges separate more than the upperends of said edges.

12. In a yarn cleaner for removing particles from a traveling yarn, apair of transverse blades located on opposite sides of the yarn andhaving inner edges spaced by a distance less -than the diameterof theyarn,

one of said bladeshavin in its inner edge a notch partially lsurroun ingthe yarn, supports for said blades permitting them to turn outward fromeach other in a direction so inclined to the blades that the lower ends10 of their inner edges separate more than the upper ends of said edges,and resilient means tending normally to position the blades in line witheach other.

In testimony whereof I have hereunto set 15

